mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import socketserver
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import threading
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import modem
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import static
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#from other import *
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import other
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modem = modem.RF()
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class TCPRequestHandler(socketserver.BaseRequestHandler):
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def handle(self):
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# self.request is the TCP socket connected to the client
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self.data = self.request.recv(1024).strip()
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# interrupt listening loop "while true" by setting MODEM_RECEIVE to False
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#if len(self.data) > 0:
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# static.MODEM_RECEIVE = False
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print("{} wrote:".format(self.client_address[0]))
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print(self.data)
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# just send back the same data, but upper-cased
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self.request.sendall(self.data.upper())
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#if self.data == b'TEST':
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#logging.info("DER TEST KLAPPT! HIER KOMMT DER COMMAND PARSER HIN!")
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# BROADCAST PARSER -----------------------------------------------------------
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if self.data.startswith(b'BC:'):
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static.MODEM_RECEIVE = True ####### FALSE....
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print(static.MODEM_RECEIVE)
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data = self.data.split(b'BC:')
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daten = modem.Transmit(data[1])
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static.MODEM_RECEIVE = True
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print(static.MODEM_RECEIVE)
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# ACKNOWLEDGE PARSER -----------------------------------------------------------
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if self.data.startswith(b'ACK:'):
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static.MODEM_RECEIVE = True ############## FALSE
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print(static.MODEM_RECEIVE)
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data = self.data.split(b'ACK:')
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data_out = data[1]
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static.TX_BUFFER = [data_out[i:i+24] for i in range(0, len(data_out), 24)] # split incomming bytes to size of 30bytes, create a list and loop through it
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static.TX_BUFFER_SIZE = len(static.TX_BUFFER)
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for frame in range(static.TX_BUFFER_SIZE): # LOOP THROUGH DATA LIST
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#--------------------------------------------- BUILD DATA PACKET
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ack = b'REQACK'
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data_to_transmit = ack + static.TX_BUFFER[frame]
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print(len(data_to_transmit))
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print(data_to_transmit)
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#---------------------------------------------------------------
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#static.TX_N_RETRIES = 1
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for static.TX_N_RETRIES in range(static.TX_N_MAX_RETRIES):
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#print("RETRY: " + str(static.TX_N_RETRIES))
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#print("SENDING")
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static.ACK_RECEIVED = 0
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daten = modem.Transmit(data_to_transmit)
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# --------------------------- START TIMER ---> IF TIMEOUT REACHED, ACK_TIMEOUT = 1
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static.ACK_TIMEOUT = 0
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timer = threading.Timer(static.ACK_TIMEOUT_SECONDS, other.timeout)
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timer.start()
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# --------------------------- WHILE TIMEOUT NOT REACHED AND NO ACK RECEIVED --> LISTEN
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print("WAITING FOR ACK")
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while static.ACK_TIMEOUT == 0 and static.ACK_RECEIVED == 0:
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static.MODEM_RECEIVE = True
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#--------------- BREAK LOOP IF ACK HAS BEEN RECEIVED
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if static.ACK_RECEIVED == 1:
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static.TX_N_RETRIES = 3
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break
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#-------------------------BREAK TX BUFFER LOOP IF ALL PACKETS HAVE BEEN SENT
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if frame == static.TX_BUFFER_SIZE:
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break
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print("NO MORE FRAMES IN TX QUEUE!")
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